Part Number HFE4191-541 Fiber Optic Emitters in stock with ready to ship. Get an instant quote for Honeywell Microelectronics And Precision Sensors part number HFE4191-541 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for HFE4191-541. Our dedicated account manager will get back to you within 15 minutes.